WidgetDelegateView is its own contents view.

chrome/browser/chromeos/ui/idle_app_name_notification_view.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/chromeos/ui/idle_app_name_notification_view.h"
 
 #include <string>
 
 #include "ash/common/shell_window_ids.h"
 #include "ash/shell.h"
@@ skipping 34 matching lines @@
 // Color of the text of the warning message.
 const SkColor kErrorTextColor = SK_ColorRED;
 
 // Color of the window background.
 const SkColor kWindowBackgroundColor = SK_ColorWHITE;
 
 // Radius of the rounded corners of the window.
 const int kWindowCornerRadius = 4;
 
 // Creates and shows the message widget for |view| with |animation_time_ms|.
-void CreateAndShowWidgetWithContent(views::WidgetDelegate* delegate,
-                                    views::View* view,
-                                    int animation_time_ms) {
+void CreateAndShowWidget(views::WidgetDelegateView* delegate,
+                         int animation_time_ms) {
   aura::Window* root_window = ash::Shell::GetTargetRootWindow();
   gfx::Size rs = root_window->bounds().size();
-  gfx::Size ps = view->GetPreferredSize();
+  gfx::Size ps = delegate->GetPreferredSize();
   gfx::Rect bounds((rs.width() - ps.width()) / 2,
                    -ps.height(),
                    ps.width(),
                    ps.height());
   views::Widget::InitParams params;
   params.type = views::Widget::InitParams::TYPE_POPUP;
   params.opacity = views::Widget::InitParams::TRANSLUCENT_WINDOW;
   params.ownership = views::Widget::InitParams::NATIVE_WIDGET_OWNS_WIDGET;
   params.accept_events = false;
   params.keep_on_top = true;
   params.remove_standard_frame = true;
   params.delegate = delegate;
   params.bounds = bounds;
   params.parent = ash::Shell::GetContainer(
       root_window, ash::kShellWindowId_SettingBubbleContainer);
   views::Widget* widget = new views::Widget;
   widget->Init(params);
-  widget->SetContentsView(view);
   gfx::NativeView native_view = widget->GetNativeView();
   native_view->SetName("KioskIdleAppNameNotification");
 
   // Note: We cannot use the Window show/hide animations since they are disabled
   // for kiosk by command line.
   ui::LayerAnimator* animator = new ui::LayerAnimator(
           base::TimeDelta::FromMilliseconds(animation_time_ms));
   native_view->layer()->SetAnimator(animator);
   widget->Show();
 
@@ skipping 171 matching lines @@
     error = true;
     app_name = l10n_util::GetStringUTF16(
         IDS_IDLE_APP_NAME_UNKNOWN_APPLICATION_NOTIFICATION);
   }
 
   view_ = new IdleAppNameNotificationDelegateView(
       this,
       app_name,
       error,
       message_visibility_time_in_ms + animation_time_ms);
-  CreateAndShowWidgetWithContent(view_, view_, animation_time_ms);
+  CreateAndShowWidget(view_, animation_time_ms);
 }
 
 }  // namespace chromeos